There are only three and they spell out U F O. No letters in the bonus stages.
Planet 1 - Near the floating sponge with two rows of bubbles above it. Clearly visible in the red cake wall here, right at the end of the stage, just before the boss fight.
Planet 2 - In the ice ceiling here whilst fighting the weird blue guy who spams green bouncing bullets.
Planet 3 - hidden in the trees underneath the first floating island at the beginning of the stage.
3 окт 2024
